METHODE ZUR HERSTELLUNG EINER MASKE FÜR EINE OPTISCHE AUFZEICHNUNGSKARTE VOM ROM-TYP UND METHODE ZU DEREN PRÜFUNG.
摘要
This invention relates to a fabrication method of a mask used for writing ROM type data to an optical recording medium of a ROM type optical recording card. The present invention first produces a mother mask having a pre-formatted pattern, then produces a master mask by transferring the pre-formatted pattern of the mother mask and by writing a necessary optical recording pattern and produces a working mask from the master mask. If the pre-formatted pattern is of a writable type, the inspection of the mother mask, the writing or inspection of the master mask and the inspection of the working mask can be made by a read/write device for a writable optical recording card.
申请公布号
DE68919079(D1)
申请公布日期
1994.12.01
申请号
DE1989619079
申请日期
1989.04.12
申请人
KYODO PRINTING CO., LTD., TOKIO/TOKYO, JP
发明人
FUKUSHIMA, YOICHI KYODO PRINTING CO., LTD., TOKYO 112, JP;FUJITA, MINORU KYODO PRINTING CO., LTD., TOKYO 112, JP;KAKINUMA, YUJI KYODO PRINTING CO., LTD., TOKYO 112, JP